Refrigerator



FIG. 1 is a front perspective view of a refrigerator showing our new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear elevation view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a left side view thereof; and,

FIG. 9 is a perspective view thereof shown in an open condition.

The broken lines shown in the drawing disclosure are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a refrigerator, as shown and described. 